Air-compressor.



' self-contain ii 'm 1 1 h m 1111 e istecomp cy' diere the .v PATENT ..OFFI E.-..j 72- am or m nia Tb all o m 'BeitknownthatLHaanrEos'mBnama citizen of the United States, 'at Erie, in the county of Erie and State of Pennsylvania, have. invented new and useful Improvements in Air-Compressois, of which the following is a s ification.

The object of the invention is to produce a compressor which shall give the advanta of two-stage com rewon, in'a single unit (not duplex), wi the minimum of parts and least'possible floor space, this space not 'being increased, dless ofwhdzher com ressor be driven y belt or means, as a steam or gas power cylinder, electric or other motor. As com ared with compressors as now built I have ated all but one air head;

piston rod with separate pistons mounted.

thereon, all glands and stufling boxes necui iagy with a piston rod, a long bed with c ead and guides for same, se arate tie iece between cylinders with mult tudinous holting or stud fastenings etc.; thus producing a very short machine of simple-con strnction and which compresses 1n two stages with cylinders absolutely fixed alinemeut. v a

The invention includes the construction and ent of compressing cylinder with its piston and parts, which make possi ble two-stage'compression with the simp1icity and small space described and also the use with this-cylinder of a form of crank case or bed which permits any driving motor to be assembled on its top instead of being added in such a way as to directly increase the length or width oicompressor as in the usual construction-thus furthering the idea and accomplishment of minimum floor der the re of which has two ntial diameters, (2) and (3 of proper ratio, and in which reciprocate t e correspondin ferential diameters (4) and (5) of 'lston. Connec rod (6) connects piston directly with on aft (7 of machine. The outer end of large bore is toward crank shaft and is open except asclosed b the iston. A low rewure spaceis thus orme at (9) by ifierential diameters of cylinder -and piston, into which air is admitted byinlet valve 8) operated from crank shaft by rod 21 although any suitabletype of. valve may used. ischarge valves (10) permit V was of Letters remit. a emia and Iovelabar a, mo. .lerlal mine; a.

.isa

discharge valves ,9. ove the pirtopassinto pipe (11) as iston completes its comp ng stroke, ence into cooler ('12) w ere Ltis' assed incontact w th water cooled I ipes 13) several times by bafies 1'4 Sttnd (15) sup rts outer end of comfpressmg cylinder'an is a continuation o the air j )assage from cooler, the

Pat anted rm.- 14, ion.

s1- entering head ([6), which closes outer end of small bore, passing thro h inlet valve 17) into big h pressure 'sp a ce (18 fron'iw 'chit is elledb pistonthro' discharge valves 9) and opening (20); S ace (22) Fig. .1 is the water jacket. rankcase (23) is p: aferably of the box type with necessaryo ngs' closedby plates as (24). Beann'nghgssu portedb crankcase, carry the era ft (7;

26). (27) is a ste an or gas-power cyliner supported by or: nkcase on its to (28) 7 piston therein connected wit and adapted to drive cra; lkshaft 52 by connecting rod (29 which 1 ngages ft on its one crank in 30); The power cylinder (27) 1s smg e acting, takiJ g pressure on itsupper end only. Inadditit nto retaining the minimum floor. space th s position of a power cylinder 'vesa mu h smoother action and smaller s ocks on th a machine, as period of efi'ort in same is w ractically co incident. .with period of resist: noe in comp ressing cylinder, which is not he case with the usual with balzmcewheels construction and he vy strains are trans f mitted backward anc' forward between com; plBSSllig cylinder an l balance wheels In ig. 2 the same machine isshown but with an electric or other rotary motor supported by crankc Lee (23) on its top and ada ted'to drive or: nkshaft (7) by P1111011 (32) which meshes vith wheel (26). Any

other form of conner tion may be used however,'as belt, chain et 2. Motor is at (31).

I claim In-an air compres or, the combination of (Ti a horizontal, single acting, two qage air cylinder-having two difierentdiameters of bore in line with each other end to end; a piston working then in having co 0nding differential diameters and .formmg a- .low-pressure space w thin the large bore; an

at' space an controll inlet valve below the low-pressure a port thereto; puppet low-pressure space and controlling ports therefrom; the

outer end of the lar; ;e bore being open, ex-

cept as closed by the piston; a head closing the outer end of the small bore and form 5 a puppet trolling an o sugportingfhe 10'in er;

. between the a'box extend' idly but separa inlet valve in the head to the high-presume space; a chamber 1n the head comp 5 part of the p s ace to the big?- lscharge valves a ove the space and controlling ports there T- ii open end of the an in. the bed a crank shaft and b ance carrymg piston and the crank wheels; a connect under'the cylinder, and 1y connected with the a high-pressure space within the small rising e from the low-pressure P pp pressure m, a bed rod aft;

cooled surfaces within the box; a from the low-pressure dischar box an comprising 2. part of, and'com eting the from the lowressl re space to the h-pressure space an ntlally as shown amf described.

HARRYEDSIL BA RR. Witnemes:

, G. M. Meson,

I. M. Sa mon.

and box 

